K

Concentration of solute in extract Concentration of solute in raffinate '

The value of K defines the ease of extraction. When there is a relatively high K value, good stability of product and good separation of the aqueous and solvent phases, then it may be possible to use a single-stage extraction system (Fig. 10.24). A value of 50 indicates that the extraction should be straightforward whereas a value of 0.1 shows that the extraction will be difficult and that a multistage process will be necessary. Unfortunately, in a number of systems the value of K is low and co-current or counter-current multistage systems

Table 10.1. Dielectric

constants of solvents at 25°C (arranged in

order of increasing polarity)

Solvent

Dielectric constant

Hexane

1.90 (least polar)

Cyclohexane

Was this article helpful?

0 0
Brew Your Own Beer

Brew Your Own Beer

Discover How To Become Your Own Brew Master, With Brew Your Own Beer. It takes more than a recipe to make a great beer. Just using the right ingredients doesn't mean your beer will taste like it was meant to. Most of the time it’s the way a beer is made and served that makes it either an exceptional beer or one that gets dumped into the nearest flower pot.

Get My Free Ebook


Post a comment